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<?php trait Delegator { private $delegates = []; protected function delegate($object, array $methods) { // check against duplicate methods $this->delegates[] = ['object' => $object, 'methods' => $methods]; } function __call($method, array $args) { foreach ($this->delegates as $delegate) { if (in_array($method, $delegate['methods'])) { return call_user_func_array([$delegate['object'], $method], $args); } } throw new Exception('Method not found!'); } } class AuthService { function authenticate($username, $password) { echo 'Doing the auth for ' . $username . '!'; } } class UserModel { use Delegator; function __construct(AuthService $auth) { $this->delegate($auth, ['authenticate']); } } $auth = new AuthService(); $model = new UserModel($auth); $model->authenticate('test', 'password'); $model->notFound();
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Doing the auth for test! Fatal error: Uncaught Exception: Method not found! in /in/GBXMo:19 Stack trace: #0 /in/GBXMo(46): UserModel->__call('notFound', Array) #1 {main} thrown in /in/GBXMo on line 19
Process exited with code 255.
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Doing the auth for test! Fatal error: Uncaught Exception: Method not found! in /in/GBXMo:19 Stack trace: #0 /in/GBXMo(46): UserModel->__call('notFound', Array) #1 {main} thrown in /in/GBXMo on line 19
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Doing the auth for test! Fatal error: Uncaught exception 'Exception' with message 'Method not found!' in /in/GBXMo:19 Stack trace: #0 /in/GBXMo(46): UserModel->__call('notFound', Array) #1 /in/GBXMo(46): UserModel->notFound() #2 {main} thrown in /in/GBXMo on line 19
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected T_STRING in /in/GBXMo on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_STRING in /in/GBXMo on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/GBXMo on line 3
Process exited with code 255.

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